SU918808A1 - Method of determination of turbine blade vibrational oscillation amplitude - Google Patents
Method of determination of turbine blade vibrational oscillation amplitude Download PDFInfo
- Publication number
- SU918808A1 SU918808A1 SU782572296A SU2572296A SU918808A1 SU 918808 A1 SU918808 A1 SU 918808A1 SU 782572296 A SU782572296 A SU 782572296A SU 2572296 A SU2572296 A SU 2572296A SU 918808 A1 SU918808 A1 SU 918808A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- blades
- pulses
- amplitude
- drum
- turbomachine
- Prior art date
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
(54) СПОСОБ ОПРЕДЕЛЕНИЯ АМПЛИТУДЫ(54) METHOD FOR DETERMINING AMPLITUDE
ВИБРАЦИОННЫХ КОЛЕБАНИЙ ЛОПАТОК ТУРБОМАШИНЫVIBRATION VIBRATIONS OF TURBO-MOTOR BLADDES
Изобретение относитс к вибродиагностике , в частности к способам бесконтактного измерени вибраций лопаток рабочих колес лопаточных машин.The invention relates to vibration diagnostics, in particular, to methods for contactless measurement of the vibrations of blades of impellers of blade machines.
Известен способ определени амплитуды вибрационных колебаний лопаток турбомашины путем фиксации нейтрального и отклоненного положени лопаток датчиком, расположенным на статоре двигател , и сравнени зафиксированных поло)хений il.A known method for determining the amplitude of vibration oscillations of turbomachine blades by fixing the neutral and deflected position of the blades with a sensor located on the stator of the engine, and comparing the recorded il.
Однако в известном способе не может быть обеспечена достаточна точность определени амплитуды колебаний лопаток в услови х их разношаго- вости..However, in the known method, the accuracy of determining the amplitude of the oscillations of the blades under the conditions of their different stages cannot be ensured.
Цель изобретени - повышение точности определени амплитуды колебаний лопаток, в услови х их разношагрвости .The purpose of the invention is to improve the accuracy of determining the amplitude of oscillations of the blades, under the conditions of their different matrices.
V Поставленна цель достигаетс тем, что фиксацию нейтрального положени лопаток производ т на невибрационном режиме с помощью записи импульсов от датчика на магнитный барабан , скорость которого синхронизируют со скоростью вращени ротора турбомашины, а при сравнении нейтрального и отклоненного положений ло .паток считывают импульсы, записанные на барабан.V The goal is achieved by fixing the neutral position of the blades in non-vibration mode by recording pulses from a sensor on a magnetic drum, the speed of which is synchronized with the speed of rotation of the rotor of the turbomachine, and when comparing the neutral and deflected positions of the locks. drum.
На чертеже представлена сх€Ма :устройства дл определени амплитуды вибрационных колебаний лопаток турбомашин .The drawing shows cx Ma: devices for determining the amplitude of vibrational oscillations of turbomachine blades.
Устройство содержит магнитный барабан 1, универсальную головку 2, стирающую головку 3t усилитель 4 записи , усилитель 5 воспроизведени , переключатели 6, стирающий генератор 7, выключатель8, один из периферийных датчиков 9 и блок 10 временной задержки.The device comprises a magnetic drum 1, a universal head 2, an erase head 3t recording amplifier 4, a playback amplifier 5, switches 6, an erasing generator 7, a switch 8, one of the peripheral sensors 9 and a time delay unit 10.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782572296A SU918808A1 (en) | 1978-01-19 | 1978-01-19 | Method of determination of turbine blade vibrational oscillation amplitude |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782572296A SU918808A1 (en) | 1978-01-19 | 1978-01-19 | Method of determination of turbine blade vibrational oscillation amplitude |
Publications (1)
Publication Number | Publication Date |
---|---|
SU918808A1 true SU918808A1 (en) | 1982-04-07 |
Family
ID=20745637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU782572296A SU918808A1 (en) | 1978-01-19 | 1978-01-19 | Method of determination of turbine blade vibrational oscillation amplitude |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU918808A1 (en) |
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1978
- 1978-01-19 SU SU782572296A patent/SU918808A1/en active
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